NCERT Exemplar Solutions
Class 7 - Mathematics - Unit 6: Triangles - Multiple Choice QuestionsQuestion 23
Class 7 - Mathematics - Unit 6: Triangles - Multiple Choice Questions
Question. 23
In Fig. 6.12, PQ = PR, RS = RQ and ST ∥ QR. If the exterior angle RPU is 140°, then the measure of angle TSR is
(a)
(a) 55°
(b)
(b) 40°
(c)
(c) 50°
(d)
(d) 45°
Detailed Answer with Explanation:
Exterior ∠RPU = 140°. Interior ∠P = 40°. Isosceles gives base angles = 70°. So ∠TSR = 40°.